Institution
Technische Universität Darmstadt
Education•Darmstadt, Germany•
About: Technische Universität Darmstadt is a education organization based out in Darmstadt, Germany. It is known for research contribution in the topics: Computer science & Context (language use). The organization has 17316 authors who have published 40619 publications receiving 937916 citations. The organization is also known as: Darmstadt University of Technology & University of Darmstadt.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: It is demonstrated that users frequently perceive Facebook as a stressful environ- ment, which may, in the long-run, endanger platform sustainability.
Abstract: The wealth of social information presented on Facebook is astound- ing. While these affordances allow users to keep up-to-date, they also produce a basis for social comparison and envy on an unprecedented scale. Even though envy may endanger users' life satisfaction and lead to platform avoidance, no study exists uncovering this dynamics. To close this gap, we build on responses of 584 Facebook users collected as part of two independent studies. In study 1, we explore the scale, scope, and nature of envy incidents triggered by Face- book. In study 2, the role of envy feelings is examined as a mediator between intensity of passive following on Facebook and users' life satisfaction. Con- firming full mediation, we demonstrate that passive following exacerbates envy feelings, which decrease life satisfaction. From a provider's perspective, our findings signal that users frequently perceive Facebook as a stressful environ- ment, which may, in the long-run, endanger platform sustainability.
289 citations
••
TL;DR: The results show that zero-lag synchronized chaotic dynamical states can occur over long distances through relaying, without restriction by the amount of delay.
Abstract: We show that isochronous synchronization between two delay-coupled oscillators can be achieved by relaying the dynamics via a third mediating element, which surprisingly lags behind the synchronized outer elements. The zero-lag synchronization thus obtained is robust over a considerable parameter range. We substantiate our claims with experimental and numerical evidence of such synchronization solutions in a chain of three coupled semiconductor lasers with long interelement coupling delays. The generality of the mechanism is validated in a neuronal model with the same coupling architecture. Thus, our results show that zero-lag synchronized chaotic dynamical states can occur over long distances through relaying, without restriction by the amount of delay.
288 citations
•
31 Jul 2014
288 citations
••
TL;DR: In this article, a review of bulk compositional data of northern African dust and its potential source sediments is presented, which includes elemental, isotope and mineralogical data, and the complete data set yields clear evidence that northern African Dust and its source sediment are compositionally heterogeneous on a regional scale and can be used to differentiate between major potential source areas on the basis of so-called source markers.
288 citations
••
University of Queensland1, University of Rhode Island2, Japan Agency for Marine-Earth Science and Technology3, Woods Hole Oceanographic Institution4, Technische Universität Darmstadt5, Clemson University6, Delaware Biotechnology Institute7, Joint Genome Institute8, Xiamen University9, City University of New York10
TL;DR: It is concluded that the continued inclusion of Epsilonproteob bacteria within the Proteobacteria is not warranted, and this group should be reassigned to a novel phylum for which the name Epsilonbacteraeota is proposed, and a number of subordinate changes are recommended to ensure consistency with the genome-based phylogeny.
Abstract: The Epsilonproteobacteria is the fifth validly described class of the phylum Proteobacteria, known primarily for clinical relevance and for chemolithotrophy in various terrestrial and marine environments, including deep-sea hydrothermal vents. As 16S rRNA gene repositories have expanded and protein marker analysis become more common, the phylogenetic placement of this class has become less certain. A number of recent analyses of the bacterial tree of life using both 16S rRNA and concatenated marker gene analyses have failed to recover the Epsilonproteobacteria as monophyletic with all other classes of Proteobacteria. In order to address this issue, we investigated the phylogenetic placement of this class in the bacterial domain using 16S and 23S rRNA genes, as well as 120 single-copy marker proteins. Single- and concatenated-marker trees were created using a data set of 4,170 bacterial representatives, including 98 Epsilonproteobacteria. Phylogenies were inferred under a variety of tree building methods, with sequential jackknifing of outgroup phyla to ensure robustness of phylogenetic affiliations under differing combinations of bacterial genomes. Based on the assessment of nearly 300 phylogenetic tree topologies, we conclude that the continued inclusion of Epsilonproteobacteria within the Proteobacteria is not warranted, and that this group should be reassigned to a novel phylum for which we propose the name Epsilonbacteraeota (phyl. nov.). We further recommend the reclassification of the order Desulfurellales (Deltaproteobacteria) to a novel class within this phylum and a number of subordinate changes to ensure consistency with the genome-based phylogeny. Phylogenomic analysis of 658 genomes belonging to the newly proposed Epsilonbacteraeota suggests that the ancestor of this phylum was an autotrophic, motile, thermophilic chemolithotroph that likely assimilated nitrogen from ammonium taken up from the environment or generated from environmental nitrate and nitrite by employing a variety of functional redox modules. The emergence of chemoorganoheterotrophic lifestyles in several Epsilonbacteraeota families is the result of multiple independent losses of various ancestral chemolithoautotrophic pathways. Our proposed reclassification of this group resolves an important anomaly in bacterial systematics and ensures that the taxonomy of Proteobacteria remains robust, specifically as genome-based taxonomies become more common.
287 citations
Authors
Showing all 17627 results
Name | H-index | Papers | Citations |
---|---|---|---|
Yang Gao | 168 | 2047 | 146301 |
Herbert A. Simon | 157 | 745 | 194597 |
Stephen Boyd | 138 | 822 | 151205 |
Jun Chen | 136 | 1856 | 77368 |
Harold A. Mooney | 135 | 450 | 100404 |
Bernt Schiele | 130 | 568 | 70032 |
Sascha Mehlhase | 126 | 858 | 70601 |
Yuri S. Kivshar | 126 | 1845 | 79415 |
Michael Wagner | 124 | 351 | 54251 |
Wolf Singer | 124 | 580 | 72591 |
Tasawar Hayat | 116 | 2364 | 84041 |
Edouard Boos | 116 | 757 | 64488 |
Martin Knapp | 106 | 1067 | 48518 |
T. Kuhl | 101 | 761 | 40812 |
Peter Braun-Munzinger | 100 | 527 | 34108 |